求大佬看看到底哪错了

#include<iostream>
#include<stdio.h>
#include<string>
int word[26];
char sentence[300];
using namespace std;
int main()
{
    for (int i = 0; i < 4; i++)
    {
        int j = 0;
        do
        {
            scanf("%c",&sentence[j]);
            if (sentence[j] >= 'A' && sentence[j] <= 'Z')
                word[sentence[j] - 'A']++;
            j++;
        }while (sentence[j-1] != '\n');
    }
    int max = 0;
    for (int i = 0; i < 26; i++)
    {
        if (word[i] > max)
            max = word[i];
    }
    while (max != 0)
    {
        int value = 0;
        for (int i = 0; i < 26; i++)
        {
            if (word[i] >= max)
                value = i;
        }
        if (value == 0)
        {
            cout <<' '<< endl;
            max--;
            continue;
        }
        for (int i = 0; i < value+1; i++)
        {
            if (word[i] < max)
                cout << ' ';
            else
                cout << '*';
            cout << ' ';
        }
        cout << endl;
        max--;
    }
    cout << "A B C D E F G H I J K L M N O P Q R S T U V W X Y Z";
    return 0;
}